Examines the latitude of landfall for atmospheric rivers (ARs) in the fully coupled half-degree version of the Community Climate System Model, version 4 (CCSM4) for warm future climate simulations

Looks at two regions: U.S. West Coast/North Pacific ARs and United Kingdom/North Atlantic ARs

States that changes in AR landfall-latitude reflect changes in the atmospheric steering flow

Projections show that West Coast U.S. ARs are projected to push equatorward in response to the subtropical jet climate change

Projections show that UK AR response is dominated by eddy-driven jets and is seasonally dependent

Finds that precipitation associated with ARs is also projected to increase in intensity under global warming

CCSM4 projects a marked shift to higher rainfall rates for Southern California, while small to modest rainfall rates may increase for all UK latitudes, for the Pacific Northwest, and central and northern California